Automatic box lock for drop-box looms



Sept. 4, 1928.

J. D. GROVES AUTOMATIC BOX LOCK FOR. DROP 4BOX LOOMS Filedoeufs, 1927 -2 Sheets-Sheet 1 .LILI

atroz nu;

Sept. 4, 1928.

J. D. lGROVES AUTOMATIC Box LOCK FOR DROP Box Looms 2 sheets-sheet 2 ed 0G17. 5, 1927' 3mm; @b21/ww Mum'.

'Patented Sept. 4,k 1928.

UNITED AssGNoit or (SNE-THIRD To LE-MUL nf normanno sox man son nace-Bda: Looms.

Applicationfnfefi october s, 19a?. serial No; 223,819.1"

The present invention rela-tes toautomatic boxl locks for drop box looms, and isan improvement over the device disclosed in my' Patent No'. 1,549,717,- gr'a-nted August l1,- 1925.-

It is the objectof the invention to provide an automatic shuttlev box lock cont-rolled from ai shaft of the lool-n ina novel mann-er,- inorder to hold the shuttle boxes in proper place on a level with the racey plate duringV the time that the shuttle starts on itsflight through the warp' from the corresponding shuttle box-fand' also during the return of the shuttle into the box.`

With the foregoing and other objects' i131- View,Y which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and cllair'ned,4 it bei-ng understood that changes canv be inade within the scope of whatis elaimedwithout departing froml thev spi-rit lof the invention.

The invention is illustrated in the accompanying drawings, whereinl Y Figure l is a fragmentary sidel elevation of ai drop box loom showing the improved box lock.

Fig- 9,' isj an end view of the loom illustrating the parts shown'- in Fig-1'.-

Fig.- 3l isa section-ali detail taken on the line 3--3 of Fig. l.

Drop box! looms are equipped withv a set of superpose'd shuttle boxes (not shown); as well known,- carried by a boxrod ll whichis raised and lowered for bringing" the several boxesl or cells on a level with the race plate, as welliunders'tood in the art.Y The rod l'l passes slidablly through an aperture'd an'-` gularl-y extending terminal'- lQ of anarm-13 secured to a rock shaft 14, which is oseillated in the usual Ina-nner to swing' the shuttle boxes and lay back and forth-.- The' shuttleboxes are raised and lowered by mea-ns of a link l5 actuated bya suitable mechanism,- sa'id link being pi'votally connected with a'- collar 16- fitted on the lower terminal of the rod 11 between a pai-r of nuts 17 which are screw-threaded on the rod' for purposeE of adjustment so as to`I raise a-nd lowertheshu-t-v tile boxes with reference to thelink 15;. TheVv parts described up' toV this poi-nt are used JO D. GVS; FYMILIZTOWN, iVA'I-,

o EAST' MILLINoeKn-T, MAINE.

drop box leones,` and may be regarded as i The lock? includes a har' l'di-sposed side of and parallel- Withthe-rod 1l?,- andv attached to said rod'.-` 'Ihe-` lower end of the bar 18 embraces the rod II. as' at' 19, and is cl-ar-npe'd between the colla-1f' 16 and upper nuit 17,. andl the upper end 2() of the bar 18 also' embraces therodll above a collar 21 securedl on the redit-by kmea-ns of a set screw, the collar 21 being seatable on the termin-'al 12 of the ai'in '13 to limit the downiward movement of'the'ro'd.-v Thebar' 18 hasl a series of spaced notches 22,Y therev beiiig one notch: for eachshuttle' box,v and said notchesars spa-ced apart according'to' the spacing of the shuttle boxes. Said notches are for the vengagernent of a rollle'r 23 of a locking" inem-x ber' or latch, `soas to hold-"the rod l1 and shuttle vboxes yiin- *th'eir' proper' vertical position when the shuttle boxes have been posi-- tion-ed vfor the' movement off the shuttle throughthe warp eitherfawa'y' fron-1 or to- Ward the shuttle" boxes.v A

The locking member' or' latch comprises an at one arm' 24 secured bly set screw or otherwise on' ai rock shaft 26 l'Jaral-lelljwith the shaft llt and mountedfor rot-ation iin bearings 27 se:

' cured to a bracket- 28which is' fastenedifto'- thel arlni 13,4 and afV brace`29 connects said bracket and arni. The roller E23 is mounted o in ain adjustable 'memberf 3f clamped to the arm 24h31 a bolt f v The latch is' operated automatically during the forward and backward movement of the shuttle boxes,y fronr a rotati'ng'shaft 35' of the loom- For this-purpose, a carril 3'6ls secured onv the shaft 35 and contacts with al roller' 37 of a lever 38 fulcr'unied oni'l a pedestal 39 secured on a cross niernber' of the fra-Ine of the looni. shaft 264 of the latch andex'tends downwardat an angle across the'r arrrr of the lever 38 oppositeE to' thev canr 36 which extends downwardly aft an angle i-n the opposite di-` Anf arm 4:0V Ais seeifrr'e'd .to the: roch rect-ion, said arm'- of the levei" 38-and arnr 40 Ain a longitudinal slot 44 in the corresponding arm of the lever 38. A coiled spring 45 is confined between the slide 43 and upper or inner end of the slot 44 to yieldingly move the slide 43 downwardly, and the downward movement of the slide 43 is limited by means of an adjustable stop screw 46 threaded within the end of the lever 38 and projecting into the slot 44.

In the operation of the loom, with the rod 11 and shuttle boxes moved to their extreme left hand position, as seen in Fig. 1, the cam 36 is in its uppermostposition, andwhen the rod 11 and shuttle boxes are swung to their extreme right Vhand position lthe cam 36 is in its lowerinost position, thev shaft 35 turning in synchronism with the oscillatory movement of the shuttle boxes and lay.

In operation, when the shuttle boxes are swung toward the lei't, as seen in Fig. 1, and the cam 36 is moved upwardly, the roller 37 is raised so as to swing the slotted arm of the lever 38 downwardly, and the spring 45 presses the slide 43 and; pin 42 downwardly. The shaft 26 moving with the arm 13 and rod 11 toward the left will result inthe shalt 26 moving toward the left with reference to n thev pin 42, thereby turning the arm V40 downwardly and swinging the arm 24V or latch toward the left,-so as to move the roller 23 into the registering notch 22. This will lock the rod 11 and shuttle boxes in the cori responding vertical position. A 1

' permitted by the slot 41, and as a. result thel shaftr26 is turned so as to swing the latch away from the bar 18, thereby releasing the- I rod 11 so that it may be moved vertically.

It will be noted that' with the parts as seen-in Fig.y 1, when vthe roller-.23 engages in the corresponding vnotch 22 betere the left hand limit of movement of the shuttle boxes is reached, the slide 43 may bemoved towardthe left in they s1ot-44 so as to compress the spring 45. This provides for yielding action in order to hold the' latch in place under spring compression.

The device will lock therod 11 in any of its vertical positions, with the rod swung to the position shown in Fig. l, in which position the shuttle travels through the warp either out of or into the shuttle box `which is on a level with the race plate of the loom. The latch being held under spring pressure in engagement with the bar 18 will prevent vertical vibration of the shuttle boxes and accomplish other advantages.

AsV shown, the lever 38 and arm 40 are loycated at a distance from the rod 11 and bearings 27, so that the shaft 26 is journaled in i lor locking the slidable member in diilerent positions, a mechanically operable member movable in synchronism with said oscillatory member, and a connection between .the

mechanically operable member and latchincluding a spring and so arranged that the movement of the oscillatory member in vone f direction and the movement 'of the mechanically operable member in the corresponding direction will jointly move the latch to unloclnng position and that `the* joint movements of the oscillatory and mechanically operable members in the opposite directions will move the latch to locking position under spring pressure.r

2. ln a loom, an oscillatory lay member, av slidable shuttle box lifting member mov,- able therewith and slidable relatively' thereto, a latch carried by the oscillatoiymember 'lior locking the slidable member in ditl'erent positions, an oscillatory arm connected with said latch ior moving vit to lockingv and un locking positions, a mechanically operable member operable in synchronism 'with said oscillatory member, a slidable pivot connection between said arm and .mechanically operablemember, said arm and mechanically operable member beingso arranged that the movement oi the oscillatory memberin `one direction and the movement of the meclianically operable member in the corresponding direction will jointly move the latch to unlocking positionr and that-the joint movements ol the oscillatory and mechanically operable members in the opposite direction will move the .latchto locking position, and spring means associated with said connection to exert pressure on the latch when it isl moved to locking posit-ion.y l W Y 3. In a loom, an oscillatory lay member, a slidable shuttle box lifting member movable therewith vand slidable relativelyv thereto, a n

latch carried by the oscillatory member for locking the slidable member in different positions, a mechanically operable leverY operable in synchronism with said oscillatory member, an oscillatory arm connected with the latch for moving it to locking and unlocking pesitions, and a sliding pivot connection between said lever and arm, said lever and arm being so arranged that the movement of the oscillatory member in .one ,direction and movement of the lever in the correroo latch toV unlocking position and that the joint' movements of the oscillatory member' and lever in the yopposite directions will move the latch to locking position.

el. In a loom, an oscillatory lay member', a slidable shuttle box lifting member movable therewith and slidable relatively thereto, a latch carried by the oscillatory member for locking the slidable member in different positions, a mechanically operable lever operable inV synchronism with said. oscillatory member, an oscillatory arm connected With the latch for moving it to locking and nnlocking positions, a sliding pivot connection between said lever and arm, said lever and arm being so arranged that the movement or the oscillatory member in one direction and movement of the lever in the corresponding direction will j-ointly move the latch to unlocking position and that the joint movements of the oscillatory member and lever in the opposite directions Will move the latch to locking positlon, and spring means associated with said connection to provide :for yielding action and to move the latch to locking position under spring pressure.

5. ln a loom, an oscillatory lay member, a slidable shuttle box lifting member movable therewith and slidable relatively thereto, a latch carried by the oscillatory member 'for locking the slidablel member in different positions, a mechanically operable lever operable in synclironism With said oscillatory member and having a slot, an oscillatory arm connected with the latch `lor moving it to locking and unlocking positions and having a slot, a pivot element 'Working in said slots of the lever and arm, said lever and arm being so arranged that the movement of the oscillatory member in one direction and movement of the lever in the corresponding direction Will jointly move the latch to unlocking position and that the joint movements of the oscillatory member and lever in vthe opposite directions Will move the latch4 to locking position, and

spring means associated with the lever and pivot element arranged to permit of yielding action and to move the latch to locking position under spring pressure. 1

6. In a loom, an oscillatory lay member, a slidable shuttle box lifting member movable vtherewith andV slidable relatively thereto, a latch carried by the oscillatory member for locking the slidable member in diliierent positions, a mechanically operable lever operable in synchronism with said oscillatory member and having a slot, 'an

oscillatory arm connected With said latch ormovmg it to locking and unlocking posi- `tions and having a slot, said arm and lever crossing one another at an angle, a pivot element Working in said slots of the arm and lever, said arm and lever being so arranged that the movement of the oscillatory-membery in one direction and movement of the y lever in the corresponding direction will jointly move the latch to unlocking position and that the joint movements of the oscillatory member and lever' in the opposite directions Will move theA latchv to locking position, and spring means carried by said p lever to permit of yielding action o said pivot element in the movement of the latch to locking position.

7. ln a loom, an oscillatory lay member, a slidable shuttle box lifting member movable therewith and slidable relatively thereto, a latch carried by the oscillatory member for looking the slidable member in.

di'erent positions, and mechanically operable means connected With said latch and operable in synchronism With said oscillatory memberlor moving the latch to unlocking position when said oscillatory member is moved in one direction and for moving' the latch to locking position When the oscillatory member is moved in the opposite direction, Y

said means including a spring to exert pressure on the latch When it is moved to locking position. i

ln testimony whereof l hereunto affix my signature. 4

` JOHN D. GROVES; i 

